Secret of the Solstice supports a Party System which allows up to eight characters to team up for adventures. Experience (Exp) is distributed to the participants depending on their levels. Grouping also yields an experience bonus of 10% for each player.

If a party contains one of each of the 4 main character classes, members will receive an additional 10 percent exp bonus. If a Xenian is also present, members will earn another 10% exp bonus!

In the Party Window pictured below, players can view the status and current location of each party member. The party leader can also manage how loot is distributed.

Players can use the Secret of the Solstice Smelting System to upgrade existing items by strengthening them. Smelting either succeeds or fails at a fixed rate determined by the weapon level. Depending on the item's level, smelting can result in the downgrading of an item or even its destruction.

The "Mini Sales" system allows characters to trade unused items obtained during gameplay. In Mini Sales players display items they want to sell along with the asking price. Other players are then able to contact the player by clicking a sales message above the character.